twbs/bootstrap — pull request #15086 by mdo (2014-11-11 23:44:32+00:00)
Title: Don't remove focus outline from buttons in button groups

Fixes #14939.

We were doing this to avoid some *undesirable* aesthetics when using the dropdown plugin, but that's much less of a concern when you consider no one can currently tab through button groups.

/cc @hnrch02 @patrickhlauke